package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {

        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3、如果没有查询到则返回登录失败结果
        if (emp == null) {
            return R.error("登录失败");
        }

        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", emp.getId());
        BaseContext.setCurrentId(emp.getId());

        return R.success(emp);
    }

    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 保存员工：一级路径employee，没有二级路径，请求方式POST，请求参数格式JSON
     * @param employee JSON格式
     * @param session  为了获取登录用户的id
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Employee employee, HttpSession session) {
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        employee.setStatus(1);
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
        Long empID = (Long) session.getAttribute("employee");
//        employee.setCreateUser(empID);
//        employee.setUpdateUser(empID);
//    MybatisPlus的保存操作
        employeeService.save(employee);
        return R.success("添加成功");
    }

    @GetMapping("/page")
    public R<Page<Employee>> page(Integer page, Integer pageSize, String name){
        Page<Employee> pageInfo = new Page<>(page, pageSize);
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName, name);
        queryWrapper.orderByDesc(Employee::getCreateTime);
        employeeService.page(pageInfo, queryWrapper);
        return R.success(pageInfo);
    }

    @PutMapping
    public R<String> update(@RequestBody Employee employee) {
        if (employee.getId()==1){
           return R.error("管理员账号不能修改");
        }
//        Long empId = (Long) session.getAttribute("employee");

//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return R.success("成功");
    }


    @GetMapping("{id}")
    public R<Employee> getById(@PathVariable Long id) {
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        else return R.error("没有查询到对应的员工");
    }


}